Abstract: The hibernation and emergence from hibernation of five-toed jerboa were studied in Huhehot district. After further analysis, some results are as follows: After long hibernation, the five-toed jerboas emerge from hibernation at the last few days in March or at the first few days in April. The critical daily average temperature of emergence from hibernation is 3.3-4.2℃. The sequence of emergence from hibernation is that after the males have emerged about 20days, the females begin to emerge. The major members of emerged rodents are the adult 2-4 (Ⅳ～Ⅵ). There are no juveniles' emerging and only a few seniors and subadults emerge from hibernation. The beginning dates of hibernation are the last few days in September or the first few days in October. The critical daily average temperature of hibernation is about 14℃. The sequence of hibernation is that after the females have hibernated some days the males begin to hibernate. The finishing date of hibernation is on October 20th. There are no obvious sequence of hibernation aud emergence from hibernation in aged-groups.

摘要： 本文对呼和浩特地区五趾跳鼠的出入蛰特征进行了调查,结果表明,开始出蛰时间为3月底或4月初,出蛰临界日均气温3.3～4.2℃,出蛰顺序为先雄后雌,相差20天左右;入蛰开始时间为9月底或10月初,入蛰临界日均气温14℃左右,入蛰顺序先雌后雄,入蛰结束时间10月20日,出蛰和入蛰均无年龄顺序。

关键词: 五趾跳鼠, 出蛰, 入蛰, 踩格率